I am going to say yes under the various conditions for the storage, use and handling of hazardous material in any quantity.

As you can see aqueous ammonia has a slight flammability characteristic but is highly toxic.

I would follow the strategies in the 2016 NFPA 400, Hazardous Material Code for high level Level 4 Contents referred in Section 4.2.1.2.4. For the fire protection requirements for the control area requirements that are based on the occupancy classification, must be in accordance with Section 5.2.

Consult with Chapter 6 for the storage, use, and handling of hazardous materials in any quantity.

Refer to Section 6.2.1.1 for the fire protection system requirements for Level 4 contents.